Immediate Maxillary Molar Implants

Implant placement into fresh extraction sockets is currently a choice to replace missing teeth for anterior and molar sites. In maxillary molar sites the technique involves numerous challenges related to site-specific anatomic, occlusal, and biomechanical factors. There is a wide variability in the anatomy of maxillary molars, which makes the interradicular bone anatomy vary in each case. In some cases there is enough availability of bone in the interradicular maxillary ridge to place an immediate implant. This article reports on the surgical-prosthetic treatment of patients with immediate implants placed in the interradicular bone of the maxillary first molars.

Angulated dental implant abutments are now relatively commonplace in the prosthetic reconstruction of patients requiring implant treatment. They are most commonly applied in multiple implant screw retained full arch cases and the ability to alter the alignment of the implant fixture gives the opportunity to optimize the path of insertion of the prosthesis and locate access screw holes in an aesthetically and occlusally favorable position. This paper reports on two clinical cases utilizing a novel jig and abutment system to optimize accuracy in the passive seating of the overall prosthesis.

Regeneration and preservation of alveolar bone surrounding a dental implant is essential for implant success. This process can be affected by a number of local and systemic factors. In this clinical case, medicalgrade calcium sulfate hemihydrate (MGCSH, DentoGen®, Orthogen, LLC, Springfield, NJ) was used to repair a bone defect resulting from peri-impantitis surrounding a failing dental implant. MGCSH is a bone graft that stimulates bone growth and acts as a membrane barrier to prevent soft-tissue infiltration.

Movement of impression copings inside the impression material using an open-tray impression technique during clinical and laboratory phases may cause inaccuracy in transferring the 3-dimensional spatial orientation of implants intraorally to the definitive cast. Consequently the restoration may require corrective procedures. This in vitro study evaluated the accuracy of 3 different impression techniques using polyvinylsiloxane impression material to obtain a precise definitive cast for a multi-unit implant restoration with multiple internal connection implants.